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                [POI2005]Dzi-Hollows
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                <p>时间限制：10s&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;  空间限制：162MB</p>			</div>
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                                <h3>题目描述</h3><p>在 Byteotia境内有两棵非常高的树, 树上有一些洞. 一天n 只鸟飞来这里要住进这些树洞里. 他们中的有一些是好朋友想互相能访问到对方的树洞,所以他们必须遵守: 
·	任意两只想互相访问的鸟必须住在不同·	的树上; 
·	对于任意两对鸟如果他们访问的路线不·	能相交(访问的路线看做是树洞间的直线),但是共顶点是允许的. 
另外有一点,每只鸟都想尽量住低一点,所以任何一棵书上都只会住连续的x只鸟而不会出现中间出现空树洞的情况. 
我们想知道一共有多少种住宿安排使得条件满足. 
</p><hr/><h3>输入格式</h3><p>第一行三个整数n, m 和 k, 分别表示: 鸟的个数, 互相访问的鸟的对数以及输出时用到的数, 2 <= n <= 1 000 000, 1 <= m <= 10 000 000, 2 <= k <= 2 000 000. 鸟儿从1 到 n编号. 接下来m 行每行两个数ai 和 bi, 表示相连的两只鸟(1 <= ai, bi <= n,  ai <> bi). 特定的一对鸟在文件中最多出现一次. 
</p><hr/><h3>输出格式</h3><p>输出总方案mod p后的数字. 

</p><hr/><h3>样例输入</h3><pre>3 2 10
1 2
1 3
</pre><hr/><h3>样例输出</h3><pre>4
</pre><hr/><h3>提示</h3><p>没有写明提示</p><hr/><h3>题目来源</h3><p>没有写明来源</p>
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